Sharp 32LF-94EC, Service Manual, Page: 30 / 82

6
AK53 D.O.C. Service Manual 22/03/2004
11.SAW FILTER SPECIFICATION
Two groups of saw filters are used from EPCOS
For picture (Z400)
?
Pal Secam BG DK L L’
?
K3953M
?
Pal Secam BG I I’
?
K3953M
For sound(Z401)
?
Pal Secam BG DK L L’
?
K9656M
?
Pal Secam BG I I’
?
K9356
For sound saw filter it needs to be switched between L’ and other standards for K3953M, a port signal
coming from PNX300X(ADOC) called SEL_L/L’ is used for this purpose to make pin2 of audio saw filter
ground or not.
port state Q404 Standard
SEL_L/L' High Shorted to
ground
L'
SEL_L/L' Low open BG,DK,I,L
Pin Configuration
Pin No Definition
1 Input
2
Input - ground
3
Chip carrier - ground
4
Output
5
Output
Maximum ratings for saw filters
Operable temperature range T
A
Storage temperature range T
stg
DC voltage V
DC
AC voltage V
pp
–25/+65 °C
12.IC DESCRIPTIONS
In following chapters you can find details of ICs used in the chassis and the SS B(Small signal board)
TDA6108JF
HT48RA0A
PNX3000 CS51033
SDRAM 64MBIT FLASH 32 MBIT
NE56610-29 STS5PF30L
PNX300X M24C64WBN6
TDA7480L LM7808
TDA8177&STV9379FA TCET1102G
MC44608 TL431
TFMS5360